BlenderBottle Classic V2 Shaker Bottle 20oz - Clear/Black Review (2026)
Updated September 21, 2026 · Research-based review
Our verdict
A good fit for single scoop protein shakes where a smaller, easier to carry bottle matters more than maximum capacity. The updated V2 design improves the lid and base over the original Classic, though like other single bottle listings it needs washing after every shake before reuse.

BlenderBottle Classic V2 Shaker Bottle 20oz in clear and black, an updated version of the classic design.
Price range: $ (Budget)
What we liked
- + V2 design refines the classic lid and bottle shape
- + Clear body shows mixing progress and remaining liquid
- + 20oz size suits single-scoop protein shakes
Trade-offs
- - Clear plastic can stain from colored supplements
- - Single bottle means washing it after every shake
What you get
This is the 20oz version of BlenderBottle's Classic V2 shaker, an updated take on the brand's original leak proof bottle design, finished in clear and black. It uses the same 316 surgical grade stainless steel BlenderBall wire whisk found across the wider lineup, which sits loose inside the bottle and helps mix powder thoroughly into liquid as you shake by hand. The V2 update refined the rounded base shape for better mixing action against the bottle walls and added a SpoutGuard on the flip cap so your hand does not need to touch the actual drinking spout when opening it before a shake.
Fit for meal prep routines
At 20oz this is the smallest common size in the Classic lineup, sized for a single scoop of protein powder mixed with water or milk rather than a larger double serving shake. That makes it a good option for someone who wants a compact bottle that fits easily in most car cup holders and gym bag side pockets without crowding other gear. The wide mouth opening makes adding powder, ice or fruit simple without spilling around the rim, and embossed markings on the side show ounces up to about 14 for rough measuring while filling the bottle. The compact footprint also makes it easier to pack alongside other meal prep containers in a lunch bag without taking up too much space.
Build and materials
The bottle is made from BPA and phthalate free plastic and is fully dishwasher safe, which is standard across this brand's entire shaker lineup regardless of size or color. The screw on lid threads down tightly to create a leak proof seal, a detail the brand has refined across multiple versions of this same bottle shape over the years. BlenderBottle backs the Classic V2 with a manufacturer's limited lifetime warranty, so a cracked lid, worn cap hinge or lost whisk ball down the line is generally covered if the product has been registered with the brand.
Where it falls short
The clear half of the bottle is the most likely source of buyer complaints, since colored protein powders and greens supplements can leave a visible tint behind after repeated use even with regular dishwasher cycles running between shakes. Because this is a single bottle rather than a pack, it also needs to be washed and ready again before the next shake, which is more of a daily chore for anyone mixing drinks more than once a day at different times. Buyers who want a spare bottle on hand for backup should look at a two pack listing instead of this single unit. Anyone who has previously owned a clear shaker bottle from another brand will recognize this same staining pattern, and it tends to be more noticeable with bright orange or green powders than with plain vanilla or chocolate flavors.
Bottom line for buyers
This is a dependable, no frills shaker bottle for anyone who prefers a smaller 20oz size and only needs one bottle at a time rather than a matching set. The V2 refinements to the lid and base are incremental rather than dramatic compared with the original Classic, but they do make the bottle feel more polished and secure in daily use. If colored powder staining is a real concern, an all black version of the same bottle would hide residue better over time than this particular clear and black color combination on the market.
Frequently asked questions
How is the Classic V2 different from the original Classic?
The V2 has a refined rounded base for better mixing and adds a SpoutGuard on the flip cap so your hand does not touch the drinking spout.
Is 20oz enough for a protein shake?
It comfortably fits a single scoop of powder with water or milk plus room to shake, though it is smaller than the brand's 24oz and 28oz sizes.
Will the clear plastic stain over time?
Yes, colored powders and greens supplements can leave visible tinting on the clear half of the bottle after repeated use.
Does this bottle come with a warranty?
BlenderBottle backs the Classic V2 with a manufacturer's limited lifetime warranty against defects.
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